On Thu, May 15, 2014 at 10:47:18AM +0100, Mel Gorman wrote: > On Thu, May 15, 2014 at 11:10:55AM +0900, Joonsoo Kim wrote: > > > That doesn't always prefer CMA region. It would be nice to > > > understand why grouping in pageblock_nr_pages is beneficial. Also in > > > your patch you decrement nr_try_cma for every 'order' allocation. Why ? > > > > pageblock_nr_pages is just magic value with no rationale. :) > > I'm not following this discussions closely but there is rational to that > value -- it's the size of a huge page for that architecture. At the time > the fragmentation avoidance was implemented this was the largest allocation > size of interest.
Hello, Indeed. There is a such good rationale. Really thanks for informing it. Thanks. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
